Mobil Delvac Modern 20w50 Complete Defense

High Performance Diesel Engine Oil

Mobil Delvac Modern 20w50 Complete Defense

Mobil Delvac Modern™ 20W-50 Complete Defense is a high performance diesel engine oil that provides excellent lubrication promoting extended engine life.This product meets the requirements of majority of European and American engine manufacturers. The high performance of Mobil Delvac Modern 20W-50 Complete Defense has been proven in the field in a wide variety of applications, and mixed fleets.


The chemistry of this product provides outstanding performance in both modern and  older diesel engines operating on low or high sulphur fuel. Mobil Delvac Modern 20W-50 Complete Defense combines a blend of high performance base stocks with a progressive additive system to provide superior control of oil thickening due to soot build-up and high temperatures as well as outstanding resistance to oxidation, corrosion, and high temperature deposits.


Features and Benefits

The features and benefits of Mobil Delvac Modern 20W-50 Complete Defense include:



Advantages and Potential Benefits

High thermal and oxidation stability

Reduced sludge build-up, deposits and viscosity increase

TBN reserves

Deposit control and acid neutralisation

Stay-in-grade shear stability

Wear protection and viscosity contro

Advanced detergency/dispersancy

Cleaner engines and longer component life

Improved soot handling

Improved viscosity control and used oil pumpability

Component compatibility

Longer gasket and seal life


Specifications and Approvals




MB 228.1


Properties and Specifications




SAE 20W-50

Cold-Cranking Simulator, Apparent Viscosity @ -15 C, mPa.s, ASTM D5293


Ash, Sulfated, mass%, ASTM D874


Flash Point, Cleveland Open Cup, °C, ASTM D92


Kinematic Viscosity @ 100 C, mm2/s, ASTM D445


Kinematic Viscosity @ 40 C, mm2/s, ASTM D445


Pour Point, °C, ASTM D97


Total Base Number, mgKOH/g, ASTM D2896


Viscosity Index, ASTM D2270



Health and safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @